1723 Subwoofer 1S

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The 1723 Subwoofer 1S is the most space-efficient model in the lineup — but don’t mistake it for compact. With the same massive 13.8-inch driver and Avalanche 800 IQ amplifier as its larger siblings, it delivers uncompromising low-end extension, dynamics, and control — ideal for those who want serious bass without stepping up to dual-driver configurations.

It puts a single driver to work with focused precision, delivering benchmark-quality bass that punches far above its footprint.

Tech Specs | 1723 Series

Based on 83 reviews

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DESIGNED
FOR DEPTH

Built around a sealed enclosure and engineered for tonal balance and transient accuracy, the 1S is a perfect fit for both music-first systems and precision-focused home theaters. It delivers deep, articulate bass with exceptional control — especially in rooms where tight integration is key.

You won’t just hear it — you’ll feel it settle into the space around you. A sudden drum kick. A cello resonating with wood and weight. A heartbeat you didn’t know was in the score. It’s not about being the loudest subwoofer in the room. It’s about being the most honest. The one that tells the truth about your music, your movies, and your room.

“Arendal Sound continues to impress, and Subwoofer 1S is not an exception. With very flexible adjustability and impressive control, this subwoofer belongs in both hi-fi setups as well as the home cinema.”

“Their sheer solidity, together with their elegant industrial design, raises them to luxury-class products.”

“It’s a subwoofer that manages to sound really big and powerful but on the other hand also takes on a much more subtle role as part of the sound system.”

SMALLER SIZE.
SERIOUS BUILD

Like every 1723 subwoofer, the 1S is constructed from thick CNC-machined HDF and finished in hand-painted Satin Black or Satin White — a reflection of our Norwegian approach to design: minimal, purposeful, and made to last. Internally braced and acoustically damped, it minimizes cabinet resonance while supporting the driver under high output.

It sits on rubber-isolated feet for stability and floor decoupling, and its sealed design means no unwanted port noise or tuning tricks — just clean, controlled performance in real rooms. Form and function, guided by a culture that values both.

ENGINEERING  EXCELLENCE

Driver

13.8″ custom long-throw driver with oversized magnet structure, aluminum shorting rings, and vented pole piece for clean, distortion-free performance — even at extreme excursions.
AMPLIFIER

Avalanche 800 IQ amplifier with 800W RMS power, parametric EQ, low-pass filters, presets, and app control. Tailored to match the 1S driver for maximum control and reliability.
ENCLOSURE

Sealed HDF cabinet with internal bracing and acoustic damping. Designed to eliminate unwanted resonance and deliver tight, accurate response.
ISOLATION

Rubber-damped feet provide mechanical isolation, improve stability, and reduce energy transfer to the floor — ideal for both hard and carpeted surfaces.
FINISH

Hand-applied Satin Black or Satin White multi-layer paint finish. No vinyl. No shortcuts.

APP-CONTROLLED.
ROOM-READY

The Avalanche 800 IQ amplifier provides 800 watts of clean RMS power, paired with intelligent DSP and full app control for iOS and Android devices. You get phase adjustment, low pass filtering, variable EQ curves, and multi-band parametric EQ — all from the listening position. Whether you’re fine-tuning to your room or switching presets for music vs. film, it’s bass on your terms.

BUILD YOUR
LOW-END FOUNDATION

The 1S makes an ideal match for 1723 Tower or Monitor setups when sealed performance is the right call — whether for room acoustics, placement needs, or personal preference. Run a single-driver 1S for tight, articulate bass reinforcement that won’t dominate your system — or use two for added balance, output, and symmetry.

It’s not the most extreme subwoofer we make — but for many listeners, it’s the most complete. Everything you need. Nothing you don’t.

a word from our customers

George A

“The 1723 1S produces the bass and more that was missing from my system…”

Edward P

“…build quality is superb and the app made setup/config a breeze versus bending over and fiddling with dials. Loving it”

Neil B

“It seamlessly blends with my existing speakers to provide fidelity, dynamism and PLENTY of low-end grunt in both stereo and home theatre use”

This speaker is for you if

You seek the pinnacle of sealed, single-driver sound with unmatched precision and low distortion.

Your room is up to 30m².

You value App-controlled integration and setup.

dimensions and tech specs

Dimensions (H/W/D): 48 x 33.5 x 45 cm
(18.9 x 13.2 x 17.7 in)
Weight: 24.5 kg
(57.3 lbs)
Enclosure: Sealed
Enclosure material: High Density Fiberboard (HDF)
Break-in for optimal performance: 50 hours
Included: Power cable. Manual.

handbook

Download

Woofer: 13.8″
Frequency response: EQ1 18Hz-200Hz (+/-3dB)
EQ2 25Hz-200Hz (+/-3dB)
EQ3 36Hz-200Hz (+/-3dB)

handbook

Download

Frequency

Frequency response does not reflect maximum output but shows its true response in a anechoic chamber. Typically you will see an elevated response in the bass response below 40Hz in room due to room gain, which can add around 6dB pr. octave under 40Hz depending on the size of your room.

CEA 2010

CEA-2010 is measured at 2m distance, following current guidelines. CEA-2010 measurements should be presented in 1m Peak measurements currently, although many are still using 2m RMS, so we include these as well.

Please note that our vented design is extremely difficult to accurately measure as the port and driver are on different planes. We are suffering some output on CEA-2010 measurements for this reason.

REAL PEOPLE, REAL STORIES

After tackling countless audio challenges, many have finally discovered the sound they’ve been longing for.
Explore these real-life journeys to find inspiration and see how Arendal Sound speakers have enriched the lives of listeners around the world.

BUY DIRECT

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Buying directly from Arendal Sound ensures you get the utmost value for your investment. You communicate directly with our industry-leading customer experience specialists for a fast, smooth, and accurate response.

No middlemen, minimal shipping.

And with a built-in 60-day audition period, we promise you a risk-free purchasing experience with no hidden catches. Experience it for yourself.

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